--- xen-4.1.0-orig/tools/hotplug/Linux/vif-bridge	2008-08-22 10:49:07.000000000 +0100

+++ xen-4.1.0-new/tools/hotplug/Linux/vif-bridge	2008-08-29 11:29:38.000000000 +0100

@@ -96,8 +96,6 @@ case "$command" in

         ;;

 esac

-handle_iptable

-

 call_hooks vif post

 log debug "Successful vif-bridge $command for $dev, bridge $bridge."

--- xen-3.3.0-orig/tools/hotplug/Linux/xen-network-common.sh	2008-08-22 10:49:07.000000000 +0100

+++ xen-3.3.0-new/tools/hotplug/Linux/xen-network-common.sh	2008-08-29 11:29:38.000000000 +0100

@@ -99,6 +99,13 @@ create_bridge () {

 	brctl addbr ${bridge}

 	brctl stp ${bridge} off

 	brctl setfd ${bridge} 0

+	# Setting these to zero stops guest<->LAN traffic

+	# traversing the bridge from hitting the *tables

+	# rulesets. guest<->host traffic still gets processed

+	# by the host's iptables rules so this isn't a hole

+	sysctl -q -w "net.bridge.bridge-nf-call-arptables=0"

+	sysctl -q -w "net.bridge.bridge-nf-call-ip6tables=0"

+	sysctl -q -w "net.bridge.bridge-nf-call-iptables=0"

     fi

 }